EDR vs Antivirus: What’s the Difference?

Cyber threats don’t wait, and neither should your defenses. As attackers grow more sophisticated, businesses must choose tools that match the pace.

While antivirus software handles familiar threats, Endpoint Detection and Response (EDR) brings deeper visibility and faster action against advanced attacks.

In this post, we break down how EDR and antivirus stack up and when you need one, the other, or both.

Key Takeaways

• Antivirus tools detect and block known threats using signature databases and basic heuristics, offering reliable protection against common malware.
• EDR platforms track endpoint behavior in real time, detect unknown threats, and support detailed investigation and response, making them effective against advanced attacks.
• Antivirus is passive and reactive, while EDR is interactive and investigative, giving analysts deeper visibility and control over incident response.
• EDR requires more resources and skilled personnel but can significantly reduce dwell time and damage from attacks through fast detection and containment.
• Both tools serve different roles: antivirus blocks threats at the perimeter, while EDR monitors and responds after execution, including fileless and zero-day activity.
• Using both together improves defense. Many organizations now deploy EDR alongside antivirus for broader protection, faster detection, and lower risk of breach.

EDR vs Antivirus Comparison Table

What is EDR?

Endpoint Detection and Response (EDR) provides advanced protection for endpoints by tracking and responding to a wide range of threats, including zero-day exploits, ransomware, and stealthy intrusions.

Unlike traditional antivirus tools, which primarily react to known malware, EDR systems focus on visibility, investigation, and response.

How Does EDR Work?

EDR goes beyond basic protection. It monitors, analyzes, and responds to threats in real time, offering visibility into suspicious behavior across endpoints.

Here’s how it works:

Step 1 – Data Collection

EDR solutions gather and log high-volume telemetry data from endpoints continuously. This includes process creation, file activity, registry changes, user logins, and outbound network traffic. The level of detail allows for broader visibility into what’s happening on a device at any moment.

Step 2 – Detecting Threats 

In the next step, EDR tools start detecting threats. It uses behavioral monitoring, anomaly detection, and threat intelligence feeds. Here’s how they work:

• Behavioral Monitoring: Instead of relying on known signatures, EDR tools evaluate ongoing behavior. Suspicious patterns, such as programs launching unexpectedly or files being encrypted in bulk, can trigger alerts.
• Anomaly Detection: Machine learning models and baselines help spot irregular activity that departs from the norm.
• Threat Intelligence Integration: These tools use feeds that track known malicious IPs, domains, and behaviors, helping correlate activity with known threats.

Step 3 – Alerting and Context

When a threat is detected, the platform generates an alert that includes a detailed breakdown of the incident. This includes the name of the affected machine, the exact sequence of suspicious events, and the assigned severity rating.

Rather than providing a vague warning, the platform gives actionable context so security teams can evaluate the level of risk and decide how to respond. This context is essential for separating critical threats from noise.

Step 4 – Response Options

The context provided in alerts allows teams to act quickly. EDR tools support both automated and manual responses. In urgent cases, the platform can isolate a machine or terminate a malicious process immediately.

For more involved scenarios, analysts can use the EDR console to connect to the system, gather forensic data, and carry out containment or recovery steps. These options give security teams the flexibility to act based on the threat’s impact and complexity.

Step 5 – Forensics and Deep Investigation

After containment, teams can use EDR to investigate how the attack unfolded. Two types of techniques are usually used for forensics and deep investigation, time reconstruction and search capabilities: 

• Timeline Reconstruction: Security teams can replay the full chain of events leading to an incident, tracing back to the origin.
• Search Capabilities: Analysts can run detailed queries across the environment to find similar indicators on other endpoints.

Step 6 – Ongoing Tuning

Every incident helps refine detection logic. Over time, the system adapts and becomes more accurate as analysts feed back lessons into detection rules and workflows.

EDR is best suited for businesses dealing with persistent threats or operating in industries frequently targeted by advanced attackers. 

Kaspersky’s 2019 survey found that among companies using EDR, 28% detected cyberattacks within hours or less.  (Kaspersky)

Proficio’s 2024 report noted that organizations utilizing AI-driven EDR solutions experienced a 63% reduction in dwell time. (Proficio)

What is Antivirus?

Antivirus software protects systems against known forms of malicious software, such as viruses, worms, and trojans.

Unlike Endpoint Detection and Response (EDR), which tracks both known and unknown threats through behavioral analysis, antivirus tools mostly depend on predefined methods to find and stop malware.

How Does Antivirus Work?

Antivirus software defends against known threats using defined detection methods. It scans files, blocks harmful activity, and isolates malicious code.

Here’s how it works:

1. Signature-Based Detection

This method uses a library of known malware fingerprints. When a file’s code matches one of these predefined signatures, it gets flagged and blocked. The system needs frequent updates to keep up with new malware variants.

2. Heuristic Based Detection

This approach looks for code structures or behaviors commonly found in malware instead of matching known patterns. It helps catch new or altered threats that have not yet been added to the signature database.

3. Behavioral Based Detection

This technique monitors how software acts in real time. If an application suddenly tries to modify system files, access secure data, or act outside normal behavior, the antivirus software treats it as suspicious and responds accordingly.

4. Prevention and Blocking

Antivirus tools operate continuously in the background, scanning files during download, access, or creation. Many of them include browser shields that block harmful sites or downloads before they reach the user’s system.

5. Quarantine and Removal

When malware is found, the antivirus software moves the file into a controlled zone to stop it from spreading or executing. Users can delete the file, and in some cases, the software might clean it and return it without the harmful code.

6. Scanning and Updates

Full system scans can run on a schedule or be launched manually. Since malware evolves constantly, these tools receive regular updates to their detection engines and signature libraries. Most vendors send these updates automatically.

Antivirus software remains an essential part of security stacks, especially for stopping known threats. However, it has limits when used alone. It works best when combined with multiple control layers such as firewalls, secure configurations, and endpoint monitoring tools. 

EDR vs. Antivirus: Key Differences

Both EDR and traditional antivirus aim to protect endpoints, but they do so in fundamentally different ways. Here are the key areas where they diverge:

EDR vs Antivirus – Key Differences

Category	Antivirus	EDR (Endpoint Detection and Response)
Main Purpose	Blocks known malware like viruses and trojans	Detects and responds to advanced and unknown threats
Detection Style	Uses signature matching and basic behavior rules	Uses real-time behavior tracking and machine learning
Threat Coverage	Focuses on known threats only	Covers both known and unknown, including fileless and zero-day attacks
Response Actions	Quarantines or deletes infected files	Can isolate devices, stop malicious activity, and reverse changes
Visibility	Monitors files and basic system activity	Collects deep data from processes, registry, network, and user actions
Skill Needed	Works automatically, minimal human input	Requires trained analysts to review alerts and investigate
Automation Level	Limited to scheduled scans and simple rules	Can run complex response actions automatically
Threat Intelligence	May include basic updates	Tied into live feeds with IP, domain, and malware behavior intelligence
Investigation Tools	Very limited	Offers detailed timelines, queries, and forensic tools
Best For	Everyday protection for personal or small business use	Advanced defense in enterprise and high-risk environments
Cloud/Remote Support	Rarely supports cloud or remote endpoints	Built to monitor and protect both on-prem and cloud-based devices

1. Detection Approach 

Antivirus relies heavily on signature matching and known threat patterns to identify malware. It excels at flagging known viruses and trojans by recognizing their code. Some AVs add heuristics for variants, but detection is largely pattern-based. EDR, by contrast, uses behavioral analysis and anomaly detection. It looks at what programs do rather than what they are.

This means EDR can detect threats that have no known signature – for example, spotting suspicious behavior from a new file or a script. (In practice, this difference is huge: by Q4 2024 an estimated 86% of new malware was employing “evasion” techniques to bypass signature-based, so EDR’s behavior-based approach is much more likely to catch such threats.)

2. Response Capabilities 

Antivirus typically has a limited response: when it finds malware, it will block or quarantine the file and maybe stop the process. But it won’t do much beyond removing that file, and it usually doesn’t provide tools for deeper investigation. 

EDR is built for active response. If a threat is detected, EDR can isolate the entire host from the network, kill not just one process but related malicious processes, and even undo malicious changes in some cases. 

It also gives security teams a console to conduct remote investigations, collect additional data, and perform remediation steps across endpoints. In short, EDR is like having an incident response agent on every endpoint.

3. Data Visibility 

Antivirus watches certain system areas (files, running processes) for malware, but its scope is fairly narrow. It’s not recording every system event, just scanning for threats. EDR provides detailed visibility into almost all endpoint activities: it tracks process trees, network connections, registry and file changes, user login sessions, etc. 

This rich telemetry means EDR can reconstruct what happened during an incident and can surface subtle signs of compromise. It’s the difference between a security camera that only triggers on known bad behavior vs. a camera that records everything for later analysis , EDR is the latter.

4. Automation and Intelligence 

Antivirus automation is usually limited to scheduled scans and real-time file scanning. It will automatically block known bad stuff, but it doesn’t have much “intelligence” beyond that, and it doesn’t typically allow custom detection logic from the user. 

EDR platforms, on the other hand, often allow a lot of customization – analysts can write hunting queries or custom rules (e.g. alert if any process touches a particular sensitive file, or if PowerShell runs Base64-encoded commands). EDR also integrates external threat intelligence and can automatically adapt to new intel (like ingesting a feed of malicious hashes to watch for). 

In terms of automation, many EDRs support playbooks or scripts to automatically respond to certain alerts (for example, auto-isolate a machine if a high-severity alert triggers). This can drastically speed up containment and has been shown to reduce incident response times by as much as 70% when repetitive tasks are. 

5. Analyst Involvement 

Antivirus is designed to require minimal human intervention. It runs quietly and only notifies the user to ask what to do with a detected threat (in consumer AV, it often just resolves it automatically). You don’t need a dedicated analyst to manage antivirus on a daily basis; its decisions are mostly pre-programmed (though someone needs to review incidents in enterprise settings). 

EDR, in contrast, is a tool for skilled security analysts. While it will automatically block some things, it also generates a lot of information that needs analysis. EDR deployments are often paired with a Security Operations Center (SOC) team or an outsourced Managed Detection and Response service. 

The EDR will catch the weird behavior, but human experts are usually needed to confirm if it’s malicious or not (to avoid false positives) and to drive the investigation/remediation process. This is why EDR is often found in medium to large enterprises that have (or use) security analysts. It’s powerful, but requires care and feeding.

6. Threat Scope 

Antivirus works well against common threats like generic ransomware, viruses, and worms. It blocks known malicious websites, infected USB drives, and other basic infection methods. But it struggles with fileless attacks and new, targeted malware.

EDR is built to detect those advanced threats. It catches fileless malware, zero-day exploits, insider threats, and attackers using legitimate tools like PowerShell to run scripts in memory. These attacks leave no traditional malware file to detect.

As fileless attacks increased, EDR became essential. By late 2024, fileless methods made up about 70% of serious malware. Antivirus alone often misses these, while EDR can spot unusual behavior with legitimate tools.

Antivirus still serves as a low-overhead defense for known threats. But it leaves gaps. EDR fills those gaps and helps teams detect and respond before threats cause major damage. Most mid-size and large companies now use both. Gartner’s 2025 endpoint guidance confirms this layered approach. One industry report shows EDR adoption nearly doubled from 2020 to 2025. Companies with EDR detect and contain breaches much faster, often cutting damage and dwell time in half compared to those using only antivirus.

Category	Antivirus	EDR (Endpoint Detection and Response)
Main Purpose	Blocks known malware like viruses and trojans	Detects and responds to advanced and unknown threats
Detection Style	Uses signature matching and basic behavior rules	Uses real-time behavior tracking and machine learning
Threat Coverage	Focuses on known threats only	Covers both known and unknown, including fileless and zero-day attacks
Response Actions	Quarantines or deletes infected files	Can isolate devices, stop malicious activity, and reverse changes
Visibility	Monitors files and basic system activity	Collects deep data from processes, registry, network, and user actions
Skill Needed	Works automatically, minimal human input	Requires trained analysts to review alerts and investigate
Automation Level	Limited to scheduled scans and simple rules	Can run complex response actions automatically
Threat Intelligence	May include basic updates	Tied into live feeds with IP, domain, and malware behavior intelligence
Investigation Tools	Very limited	Offers detailed timelines, queries, and forensic tools
Best For	Everyday protection for personal or small business use	Advanced defense in enterprise and high-risk environments
Cloud/Remote Support	Rarely supports cloud or remote endpoints	Built to monitor and protect both on-prem and cloud-based devices

Can Antivirus and EDR Work Together?

Yes. Antivirus and EDR serve different purposes and function well together. Antivirus blocks known threats before they run. EDR detects suspicious behavior that runs anyway.

Many setups include both. This often means using an Endpoint Protection Platform (EPP) with antivirus and machine learning, plus a separate or integrated EDR module. Antivirus and EDR usually operate without conflict.

This layered approach improves threat coverage. Antivirus focuses on prevention. EDR supports detection and response. Organizations that add EDR often do so to address threats missed by antivirus alone.

What Is MITRE ATT&CK and How It Supports EDR?

MITRE ATT&CK is a threat model that catalogs real-world tactics and techniques used during attacks. It organizes them into a matrix that outlines how intrusions unfold, including steps like persistence or lateral movement.

EDR tools tag suspicious activity using MITRE technique IDs. For example, credential dumping may be labeled as “T1003,” which helps analysts understand the attacker’s intent.

Mapping to MITRE also reveals coverage gaps. If no detections are tied to areas like “Privilege Escalation,” that signals missing visibility. Many EDR platforms display which techniques are covered to support better defense planning.

Security teams use the framework during threat hunts and investigations. It helps them look for specific behaviors and trace attacker movement during incidents.

MITRE ATT&CK does not block attacks. It gives structure to threat analysis and supports faster, clearer responses through EDR.

Frequently Asked Questions 

1. Is EDR a replacement for antivirus software?

No. EDR is meant to work alongside antivirus software, not replace it. Antivirus focuses on detecting known malware signatures using signatures. EDR monitors activity in real time to spot unusual behavior and respond to emerging or hidden threats. Using both creates stronger, layered protection.

2. Can EDR detect threats that antivirus software misses?

Yes. EDR can identify threats like fileless malware, zero-day exploits, and insider misuse that often bypass traditional antivirus. It analyzes behavior instead of relying only on malicious signatures, which helps detect advanced or previously unseen attacks.

3. Does EDR require more system resources than antivirus software?

Generally, yes. EDR tools run continuous monitoring, collect detailed telemetry, and process large volumes of data from each endpoint. This demands more memory, CPU, and network bandwidth compared to the lighter footprint of traditional antivirus tools.

4. Is EDR suitable for small businesses?

EDR can be valuable for small businesses, but it depends on their budget and technical resources. Antivirus solutions are easier to manage, but many vendors now offer cloud-based or managed EDR plans designed to fit the needs and constraints of smaller organizations.

5. How does EDR handle threat response?

EDR tools can act quickly during an incident. They can isolate affected devices, terminate malicious processes, and collect forensic data for investigation. These features help stop threats early and give teams what they need to respond and recover.

6. Can antivirus software prevent ransomware attacks?

Antivirus can block known ransomware strains but may struggle with newer or modified ones. EDR adds another layer by recognizing suspicious behaviors, such as mass file encryption, and responding before the damage spreads.

7. Is it necessary to have both EDR and antivirus software?

Yes. Antivirus handles known threats efficiently. EDR adds behavioral detection and rapid response capabilities. Combining the two gives broader protection against both common malware and sophisticated attacks.

8. What is the projected growth of the EDR market?

The global EDR market is projected to grow from $5.10 billion in 2025 to $15.45 billion by 2030, with a CAGR of 24.8%. This growth reflects the rising demand for advanced endpoint protection and the increasing complexity of various cyber threats.

9. How effective is EDR in reducing breach detection time?

EDR significantly cuts the time needed to detect and respond to threats. Many organizations see up to 50% faster detection compared to setups that rely only on antivirus. Real-time monitoring and quick alerts allow faster action during attacks.

10. What percentage of enterprises use EDR solutions?

As of 2025, over 80% of mid-size and large organizations use EDR, often in combination with antivirus. Adoption has surged in response to advanced persistent threats that require more than signature-based detection.

11. How does EDR adoption vary by industry?

IT and Telecom lead with about 25% of the EDR market. Healthcare is growing the fastest, with a projected CAGR of 29%, driven by strict regulations and rising digital risks. Finance, government, and education are also key sectors adopting EDR rapidly.

12. Are small and medium-sized enterprises (SMEs) adopting EDR?

Yes. SMEs are adopting EDR at a strong pace, with growth projected at 27% CAGR. Cloud-based EDR platforms with flexible pricing are making it easier for smaller businesses to improve endpoint security.

13. Can EDR solutions integrate with SIEM platforms?

Yes. EDR tools commonly integrate with SIEM systems. This allows security teams to combine endpoint data with logs from other systems for better visibility, correlation, and response across the entire environment.

14. What role does machine learning play in EDR?

Machine learning helps EDR detect threats that don’t match known patterns. It builds baselines of normal activity and flags unusual behavior, like unexpected file changes or process activity—that may indicate malware or an insider threat.

15. How does EDR handle encrypted traffic?

EDR does not need to decrypt network traffic. It monitors behavior at the endpoint level, after data has been decrypted by applications. This gives visibility into threats even when attackers use encryption to hide their activity in transit.

16. Is EDR effective against insider threats?

Yes. EDR can detect unauthorized access, unusual file activity, and privilege escalation. These capabilities help uncover insider threats or compromised user accounts that might go unnoticed by traditional tools.

17. What data does an EDR agent typically collect?

EDR agents log process activity, file access, registry changes, command-line arguments, network connections, and user session details. This data supports both real-time threat detection and post-incident investigation.

18. Can EDR systems work offline?

Yes. EDR agents continue to monitor and store local activity when offline. Once the device reconnects, it syncs with the central system and uploads logs and alerts, ensuring no loss of critical data.

19. How long is data retained in EDR platforms?

Retention periods vary, typically ranging from 30 to 180 days. Many platforms offer flexible storage options to meet compliance needs or support long investigations, with extended retention available for a higher cost.

20. What factors affect the cost of EDR implementation?

Cost depends on endpoint count, feature tier, cloud vs. on-prem setup, level of support, and integration needs. Cloud plans often reduce upfront costs, while advanced features or managed services raise the total investment. Many organizations also factor in the need to protect sensitive data and prevent security breach incidents when evaluating EDR solutions.

21. Does EDR allow visibility into attempts to access confidential information?

Yes. EDR can detect unauthorized attempts to access sensitive data, helping teams respond before damage occurs. This is especially important in industries with regulatory compliance needs or high-value digital assets.

22. What additional value does antivirus software offer in this setup?

While EDR focuses on behavioral detection, antivirus software offers fast identification of well-known threats and a lightweight layer of baseline protection that complements EDR’s broader coverage of sophisticated threats and anomalies.